Alexander gordon



'(HG Model.)

2 sheetssneet- 1 A. GORDON. RBCIPRDGATING METAL PAR'ING MACHINE.v

Patented Apr. 6, 18197.

Witnesses Inventor Saa Attorney fN'o Model.) e 2 sheet-sheen 2,

A. GORDON; RECIPROCATING METAL PARI'NG MACHINE.

Inventor Patented Apr. 6, 1897.'

No Ng Witnesses mw KQ ln Attorney UNITED STATESA PATENT OFFICE.

ALEXANDER GORDON, or HAMILTON, OIIIO, AssieNoR To THE NILEs 'IOOLH WORKS COMPANY, OE SAME PLACE.

REACIPROCATI'NG M-l-:TAL-PARING MAcHlN E.

SPECIFICATION forming part of Letters Patent N0. 579,976, dated April 6, 1897.

v pligtion'led November 30, 1896. Serial y1o.(l13,850. (No model.)

To all whom it may concern.:

Beit known that I, ALEXANDER GORDON, of llamiltomllntler county, Ohio, have invented certain new andluseful Improvements in-Reciprocating Metal-Paring Machines, of which the following is a specification.

This invention ertains to im rovements in reciprocating metal-paring machines of `that general classA exemplified by planingma- 1o chines and slotting-machines. VInimachines of this class, especially in the larger sizes, there has been a modern tendency toward increase in working speeds and in rate of feed.-

The prompt reversal of reciprocating parts at n'I5 high speed and the production of extensive feed-motions Ahave been seriously limited or rendered dicnlt by the practice of deriving the reversing and feeding motions from the reciprocating part at or during the reversal zo at a time when the operating-power mechanism was virtually disconnected from the re ciprocating'part, the momentum of the reciprocating part being depended upon to produce the desired eiiects.- Again, great diffi- 2 5 culty has been experienced in securing a satisfactory relieving motionfor the tool during the backing stroke, and -the numerous complicated devices whichhave Ibeen contrived for this purpose have been so ineflicient'and 3o troublesome that they are seldom employed, notwithstanding the recognized desirability of positively relieving the tool onrthe backingstroke. In my improved system I providefor effecting the reversal of motion, or

the production-of the feeding motion, or th'e relief of the tool, or all of these, by means of a force extraneous to that employed in giving thereciprocating motion. I employ a pneumatic engine whose solednty it is to Inove 4 certain parts pertaining )to the reversall or feeding or tool-relieving, and l impose upon the main reciprocating part of the machine p only the triiiing duty of moving the valve of this pneumatic engine.

My invention readily lends itself to planingmachines, shaping-machines, and slottingmachines, and the particular character of driving mechanism employed in the machine, as well as the particular character of feeding 5o mechanism, is immaterial.

For purposes of exemplification I show my invention in connection with a planing-mafchine of. ordinary type having usual driving mechanism and usual feeding mechanism.

My invention will be readily understood from the following description, taken in con# nection with the accompanying drawings, in which- Figure 1 is a side 'ele ration of a metal-planing machine embodying my invention, the-pneu- 6o matic engine appearing in vertical section in the plane ofline b of Fig. 3; Fig. 2, a. side elevation of the pneumatic engine; Fig, 3,' a. plan of the planer, portions appearinginhorizontalsection in the plane of line a of Fig. 1; 65 Fig. 4; a sideelevation of the clutchfarm, the clutch-shaft appearing in vertical transverseJ l section in the plane of line cproffig; and Fig. 5, avertical section o`fthejtol-'re1ievin'g valve. A ,l 1 Y In the drawings, l indicates the planer-bed, 2, the planer-table; 3, the housings; 4, the rail; 5, the reversing-tumbler; 6, the revers-- inglhandle; 7, the backingdog; 8, the cutting-dog; 9, the feed-rack; 10, the feed-tumbler; 11, the link connecting the feed-tumbler with the feed-rack l2, the driving-shaft;

13, the incased worm-gear, driven, asnsual, by a, worm on the driving-shaft; 14, the cutting-pulley loose `on the driving-shaft; 15, 8o the backing-pulley loose on the drivingshaft,v 16', t'he clitch, adapted to lock either pulley to the driving-shaft;. l?, the clutch- .throwing rock-shaft; 18, clutch-arm on this ing rock-shaft. y

All df the parts thus far referred to are as usual in wormdriven planers having the driving-shaft at one side of the machine and the tumbler at the other side Vofthe machine 9o and a rock-shaft crossing the machine for transmitting shitting motion to theclutch.`

' Proceeding with the drawings, 20indcates the cylinder ofI a pneumatic "engin a ;A 21, its piston; 22, its piston-rod connected, to arm 954 19 of the reversing mechanism; 23, the usual segment of the feed-tumbler; 24, a rack gearing therewith and connected with pistonrod 22; 25, the controlling-valve of the pneumatic engine; 26, the valve-arm ;'27, an arm monntloo shaft', and 19 a main arm on the clutch-.throw- 85 ed at its base on a pivot carried by piston-rod .22; 28, a link connecting the upper end of io 3:3 will obviously admit air to the left of' ille :zo and cause the cinte-li to loclr the backing- 3o' only time eii'eets the reversal of motion of 4o independent of theamo'unt of energy stored 5o its extremes of motion.

5 5 would pnt valve 25 toneutral position, and

5o the piston to neutral position and release bothtliisarin with reversing-tumbler 5, 29, link connecting valve-arm' 26 with an intermediate portion of arm 27, and 30 tire clutch-rou conneciing clutch ill with cimeli-arm i8.

The pneumatic engine is to 'ne supplied with compressed air from any suitable source of supply.v ll'itli Snc parts in'iie position shown in Fig. l the planer is rest. lf tmnhier 5 be thrown to inc left bylnind, volvo piston, and the piston will more to ille right, throwing the clutcli into engagement with cutting-pulley lil, and the planentable will proceed to marke its cutting stroke while ine clutch is lxcld in engagement by the, pressure on the piston.A lllien, at tlie ierininelion of the cutting stroke, lBackingdog-Y rocks tuinloler 5 to tile right, then valve ln'ill lie leversed end ille piston will move to tiro left.4

pulley l5 to the driving-shaft and cans-eine planer to make its backing stroke, and so on, the pneumatic engine causing a reversal of y thL direction of driving motion each time its valve is reversed under ,the influence of one of the dogs, the piston not only adjusting the clutch for the proper direction of motion, ont holding the clutch inte enga-gement. lt is obvious that the movement of 'the piston not the taole, ont-effects also the proper motion oi the feed mechanism, and it will be apperf ont @at the shifting of 'ille cluicli end. the holding of tlie'clutcll into engagement and the operation ol the feed calls upon the planer-table only `for such slight power as is w necessary to move the valve of the. pneumatic engine. The power and promptne'ss ci the shifting and the feeding motions tiros in the reciprocating table.

In reversing themachine "oy hand, as by operating handle only sncient power need ne applied to operate tlie valve of the pneuf matic enginertlie engine itself performing the 'real work ofreversing the clutch and op- @rating 'the feed. l

Then the planer-table is inmotion in either direction, tumbler 5 is at one or tile other of l under these con! ditions it be desired to stop the planer, the tumbler need only be brought to tlie neutral position'by means oi handle G. With the parts inthe position shownv in Fig. l this We must assume. that-the piston was at one extremity of its stroke. Hence it would appear that putting the tumbler and valve to neutral position would not necessari-ly move clutches; but when the piston is at one extremity of its stroke and the tumbleris moved to neutral position the result is not the placing of the valve in neutral position, but the reversal of the valve by reason of the opera tion of arm 27, and the reversal of the valve when it reaches mid-strokethe motion of the loiver'end of arms?? will have put the valve to niidposition,`leaving the parts all in neu? tral position and the planer at rest.

lrooeding with the drawings, 31 indicates the usual saddlm the swing, 33 the toolslide, Seine apron-box, the apron, all of ille pivot-bolt as usually employed in ,unil-ing the apron-bor; tothe slide, so as to permit the apron-box to be adjusted toangles, tl'iispivotbol in the present instance, however, being bored to form a small air-cylinder Withinit; 57, piston Workingin this cylinder and ha, its pisron-rod'projecting forwardly, sofs' to engage the rear of the apron; 38., a three- Way cock or if'alve; 3), the inlet to this valve e0, exhaust-pipe from this valve; 4l, a conduit leading from the. three-Way valve to the cylinder formed Within pivot-bolt 3G behind piston g and l2, a stud on lever 27, adapted es piston-rod 22 reciprocates to engage a. levr it to one or theotlier of its extremepositians.

Villen the planer is at rest, and also whenyit is making its cutting stroke, conduit 4]. is in communica-tion with the exhaust 40, and

lWhen piston 2l moves to the right and causes pose less. duty npon the apron as the apron falls to norma-l position preparatory to the cut.

l ola-ini asmy invention;

l. ln. a reciprocating metalparing machine, the combination, substantially asset forth, with tue in ain reoiprocatin g part there` of, tlledrlving mechanism thereof, the reversing device for said mechanism, and the dogs actu ated 'oy said 1n ain reciprocating part, of a pneumatic engine, a connection from the pistou of said engine to said reversing'fdcvice, and a connection from the valve 0f- Sa'id engine to said (logs. l

In a reciprocating metal-.paring mal' chine, the combination, substantially as 4set forth, with the nrain reciprocating part, its driving and reversing mechanism and the feed mechanism of the machine, 0f @pneumatic causes the piston to start on its stroke, and

inc to the valve of Said engine.

. ln a reciprocating nietalparing mae these paris being 'constructed as Usual; 36,

from the source of supply of compressed air.;

on the stem, of the three-Way valveV and turn' the ple-nerim lieginits backingstrokerthen..

A spring may, if desired, be'

engine, a connection from the piston of saidl engine io said feed mechanism, and a ccnnec-v A consequently there is no airpressure behind piston 37, and that piston is inert and the 'Y apron is free to occupy its normal position. Y

los

IIO

when the exhaust takes place,`so as to imgia e .579976. f Y fr chine; the combination.,pubsf-antially as Vsei;

fori/h, 'withvthe main' reciprocating part of the machine, the driving. andreversing mechanis' thereof, feed'mechanisin of the machine,l l'and thedogs acuated by'said main recipro- -eating parti, .of afpneuinati'e engine, comico-- -t'ions froin the pist-'on of said engine to said reversing and"feedf'meehanisins, andcon-nec- L 'V'tions-fiolmthelvalve of said engine to' said IO."

dogs. Y 4. In a. reciprocating metaleparing machine, the Combination, substantially as set' forti-1 wiigh the .main reciprocating part of the Inaehi-ne, the driving mechanism therefor, the

reversing device for said mechanism and the :v51

swinging apron, of a pneumatic cylinder, va piston therein, connections between said pis-- j ton and the swinging apron of. the machine,"

a controlling-valve for sfaidcylindenand-c'ony nections between said controlling-valve and zo -thc reversing'mech'anism of the machine. 

